Those links don't work, they require sign in. The trigger on the CZ452 is adjustable, if it's set at 10 oz, it's probably got a modified spring and or sleeve installed. The adjustment weight can be increased if it's not already maxed out, a Brookie kit for $15 will fix it if is. 10 oz is lighter than I like for a hunting gun, 2.5lbs is probably a better weight, although I have been known to go lighter sometimes with the right gun. 1/4" at 25yds is not real world accuracy for a seasoned CZ452, that's closer to an expected group at 50yds. 100yd groups should be in the 1/2" to 1" range, mine being closer to the 1/2" than the 1" at .6-.7". If the stock is somewhat beat up, I'd think twice about it, what's happened to the rest of it if the stock has been abused.